Browse Publications Technical Papers 2019-01-1201

Control of the effective pressure in the cylinder of a spark-ignition engine by electric magnetic valve 2019-01-1201

This paper describes a method and system for controling the effective pressure in the cylinder of an IC engine with the aim of improving engine efficiency. In this design, modified in accordance with a reported patent, compression ratio was increased by means of modifying the engine head. The main goal of proposed modification is to introduce the possibility of modifying the amount of air accumulated in the cylinder at the beginning of the compression stroke. This can be achieved in two ways: by building a release valve into a separate canal in the engine head or by employing an additional valvetrain operation system with the aim of managing engine valve movement independently of camshaft motion. The presented work is focused on an electrically actuated engine intake valve. In this design, valvetrain was modified by introducing an autonomous intake valve operation with the use of a specially designed electromagnetic actuator.


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